Physical Sciences and Mathematics Commons^™

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Thai Environment

No abstract provided.

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Thai Environment

No abstract provided.

A Multimodal And Multilevel Ranking Framework For Content-Based Video Retrieval, Steven C. H. Hoi, Michael R. Lyu

Research Collection School Of Computing and Information Systems

One critical task in content-based video retrieval is to rank search results with combinations of multimodal resources effectively. This paper proposes a novel multimodal and multilevel ranking framework for content-based video retrieval. The main idea of our approach is to represent videos by graphs and learn harmonic ranking functions through fusing multimodal resources over these graphs smoothly. We further tackle the efficiency issue by a multilevel learning scheme, which makes the semi-supervised ranking method practical for large-scale applications. Our empirical evaluations on TRECVID 2005 dataset show that the proposed multimodal and multilevel ranking framework is effective and promising for content-based …

Summarizing Review Scores Of "Unequal" Reviewers, Hady W. Lauw, Ee Peng Lim, Ke Wang

Research Collection School Of Computing and Information Systems

A frequently encountered problem in decision making is the following review problem: review a large number of objects and select a small number of the best ones. An example is selecting conference papers from a large number of submissions. This problem involves two sub-problems: assigning reviewers to each object, and summarizing reviewers ’ scores into an overall score that supposedly reflects the quality of an object. In this paper, we address the score summarization sub-problem for the scenario where a small number of reviewers evaluate each object. Simply averaging the scores may not work as even a single reviewer could …

Rapid Face Detection Using Independent Component Analysis, Aditya Rajgarhia '07

Honors Projects

Face detection is the task of determining the locations and sizes of human faces in arbitrary digital images, while ignoring any other objects to the greatest possible extent. A fundamental problem in computer vision, it has important applications in fields ranging from surveillance-based security to autonomous vehicle navigation. Although face detection has been studied for almost a decade, the results are not satisfactory for a variety of practical applications, and the topic continues to receive attention.

A commonly used approach for detecting faces is based on the techniques of "boosting" and "cascading", which allow for real-time face detection. However, systems …

High Resolution Dune Complex Mapping For The Monitoring Of Coastal Landform Change, First Landing State Park, Virginia, George M. Mcleod, Joe Daigneau, James Collins, Norma Swan, Thomas R. Allen

Virginia Journal of Science

First Landing State Park is located on the southern shore of the mouth of the Chesapeake Bay. The park contains a prograding shoreline and dune complex that has been steadily growing northward. Accurate three dimensional mapping of the resident coastal dune features is challenging due to the dynamic nature of the dunescape. Precise mapping within First Landing was accomplished through careful planning, employ of advanced Global Positioning System (GPS) technology, and intensive data analysis. Mapping ensued during a period of optimal satellite signal availability and strength. Data points were collected at manual intervals with a Leica GS50+ GPS receiver, utilizing …

Heterogeneous Formation Of Hono On Hno3 Pre-Conditioned Hydrophobic, Hydrophilic And Ionic Surfaces At Various Relative Humidities, Dustin S. Wier

Masters Theses

Nitric acid (HNO₃) is a major sink for NO_x (NO+NO₂ ) and is known to be removed from the atmosphere as a result of wet and dry deposition where it is then deposited on various surfaces in the environment. As these surfaces are photolyzed HONO is produced which affects the overlying troposphere. This study examines the amount of HONO (Nitrous Acid) produced by the photolysis of adsorbed HNO₃ as a function of changing relative humidity on hydrophobic, hydrophilic, and inorganic ionic salt surfaces. The amount of HONO produced was measured in long path cell using …

Biochemical Characterization Of Disease-Causing Mutation In N-Terminal Wilson Protein Domain Six, Patrick Ochieng

Masters Theses

Wilson protein (ATP7B) is a copper-transporting P-type ATPase that regulates copper homeostasis and secretion of copper-containing enzymes in the liver. In hepatocytes, ATP7B delivers copper to apoceruloplasmin and mediates the excretion of excess copper into bile. Mutation in the gene coding for Wilson protein leads to Wilson disease. Several mutations in Wilson protein have been identified and of particular interest, mutations affecting the N-metal binding region significantly interfere with the ability of Wilson protein to transport copper to its target in the copper-trafficking pathway. In an attempt to characterize the disease-causing mutation (G591D) in Wilson protein domain 6 (WLN6), we …

Where Science And Art Meet, Gillian Graham

Inquiry Journal 2007

No abstract provided.

Crossover Property Of The Nonperiodic Autocorrelation Of Quaternary Sequences, Michael Pohl

Honors Theses

Sequences with identical nonperiodic autocorrelation functions have recently been used to construct Golay sequences different than the Davis-Jedwab construction. In this thesis, we construct infinite families of quaternary sequences with identical non periodic autocorrelation functions. These results demonstrate that current con­ structions for quaternary families are not all encompassing and need further study.

A Three‐Dimensional Numerical Method For Modelling Weakly Ionized Plasmas, Stephen O'Sullivan, Turlough Downes

Articles

Astrophysical fluids under the influence of magnetic fields are often subjected to single- or two-fluid approximations. In the case of weakly ionized plasmas, however, this can be inappropriate due to distinct responses from the multiple constituent species to both collisional and non-collisional forces. As a result, in dense molecular clouds and protostellar accretion discs, for instance, the conductivity of the plasma may be highly anisotropic leading to phenomena such as Hall and ambipolar diffusion strongly influencing the dynamics.

Dynamics Of A Eutrophic Lake (Wilgreen Lake, Madison County, Kentucky): A First Step In Cleansing A Lake System Impaired By Nutrient Loading, Erin C. Jolly, Walter S. Borowski

EKU Faculty and Staff Scholarship

Wilgreen Lake (Madison County, Kentucky) is a eutrophic lake formed by damming Taylor Fork, part of the Silver Creek watershed. The lake is listed “nutrient impaired” by the Commonwealth and the EPA, and it is likely that nutrient input from human activities is affecting water quality. Our study aims first to characterize the physical characteristics and water quality of the lake (2006), and then to determine the specific proportion of nutrient inputs (2007) to the lake with the ultimate aim of improving its water quality.

Research started in May 2006 with work occurring throughout the 2006 field season with the …

Model-Driven Software Development, Susan Minton

Regis University Student Publications (comprehensive collection)

Model-Driven Software Development (MDSD) is an emerging technology approach that has potential to revolutionize the software industry. MDSD has the ability to both increase software delivery velocity, while at the same time reduce complexity and reuse software assets. Experts in the field believe that the MDSD approach helps to abstract away the growing interdependencies of enterprise software development by use of sophisticated tools, models, and automatic code generation. Through the use of Unified Modeling Language (UML/UML2) and other related technologies, the models are intricate enough to fully represent a system domain and then generate system code to represent that system. …

Development Of Scanning Electrochemical Microscopy For Studying Electron Transport In Lipid Monolayers And Gold Nanoparticle Films, Violeta Stoycheva

Masters Theses

The focus of this thesis is the scanning electrochemical microscopy (SECM) investigation of the electron transport in lipid monolayers and in films of gold nanoparticles. The quality and stability of lipid monolayers were characterized by various analytical techniques such as fluorescence microscopy and spectroscopy, contact angle, and electrochemistry using a monolayer modified electrode. In the SECM measurement, the monolayer electron transport was not detected. The microscopic monolayer quality turned out to be not suitable for studying the electron transport.

The conductivity of mono layer protected gold clusters (MPCs) with different core sizes (1-3 nm diameter) were investigated using SECM. These …

Repeatability Of Serial Carotid Intima Media Thickness Scanning On Individual Subjects, Judi Nightingale

Loma Linda University Electronic Theses, Dissertations & Projects

Background. Heart disease affects millions of Americans each year. In order to improve primary prevention, early risk identification is essential. B-mode ultrasound of the common carotid artery (CCA) intima-media thickness (IMT) assesses risk of a coronary event early in the process of plaque development. Because IMT changes are so small over time, in order to determine clinically significant versus clinically insignificant changes in IMT over a 12 month time period, a protocol is needed which can detect the least significant difference (LSD) of at least 0.030 mm.

Purpose. The purpose of this study was to develop and test a well-defined …

Computing Best Coverage Path In The Presence Of Obstacles In Wireless Sensor Networks, Senjuti Basu Roy

Computer Science and Engineering Theses

Given a set S = {S1,...,Sn} of n homogeneous wireless sensors deployed in a two dimensional area, a source point s and a destination point t, the least protected point p along a path (s,t) is that point such that the Euclidean distance between p and its closest sensor node Si is maximum. This distance between p and S_{i} is called the Cover value of the path P(s,t). The Best Coverage Path between s and t, denoted as BCP(s,t), is the path that has the minimum cover value. Although there exists efficient algorithms to compute BCP in O(n log n) …

A Random Walk Approach To Sampling Hidden Databases, Arjun Dasgupta

Computer Science and Engineering Theses

A large part of the data on the World Wide Web is hidden behind form-like interfaces. These interfaces interact with a hidden back-end database to provide answers to user queries. Generating a uniform random sample of this hidden database by using only the publicly available interface gives us access to the underlying data distribution. In this thesis, we propose a random walk scheme over the query space provided by the interface to sample such databases. We discuss variants where the query space is visualized as a fixed and random ordering of attributes. We also propose techniques to further improve the …

Hydrogeochemical Evolution Of Arsenic Along Groundwater Flow Paths: Linking Aqueous And Solid Phase Arsenic Speciation, Shama Haque

Earth & Environmental Sciences Dissertations

The central hypothesis of this Doctoral research work is that changes occurring along groundwater flow paths that accompany chemical weathering and oxidation-reduction reactions catalyze both arsenic (As) mobilization from, and capture by, minerals via adsorption/desorption and/or mineral dissolution/precipitation reactions. This central hypothesis is addressed by (i) quantifying concentrations and speciation of As, and ancillary geochemical parameters, including a number of redox sensitive parameters in groundwater samples collected along flow paths, and (ii) determining solid phase speciation of As in aquifer sediment samples, with specific emphasis on the labile (i.e., surface exchangeable) and non-labile As fractions (e.g., precipitated with Fe oxides). …

Measurement Of Open Beauty Production At Hera In The D *Μ Final State, S. Chekanov, M. Derrick, S. Magill, S. Miglioranzi, B. Musgrave, D. Nicholass, J. Repond, R. Yoshida, Margarita C. K. Mattingly, N. Pavel, A. G. Yagües Molina, S. Antonelli, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, M. Bindi, D. Boscherini, A. Bruni, G. Bruni, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, G. Iacobucci, A. Margotti, R. Nania, A. Polini, L. Rinaldi, G. Sartorelli

Faculty Publications

The production of beauty quarks with a D*± and a muon in the final state has been measured with the ZEUS detector at HERA using an integrated luminosity of 114 pb-1. Low transverse-momentum thresholds for the muon and D* meson allow for a measurement of beauty production closer to the production threshold than previous measurements. The beauty signal was extracted using the charge correlations and angular distributions of the muon with respect to the D* meson. Cross sections for photoproduction and deep inelastic scattering are somewhat higher than, but compatible with, next-to-leading-order QCD predictions, and compatible with other measurements. © …

La Musique Malgache : Moyen De Protection De L’Environnement, Geneviève Pearthree

Independent Study Project (ISP) Collection

Madagascar, dont la diversité naturelle et culturelle sont sans pareilles dans tout le monde, représente un microcosme de la lutte mondiale de satisfaire les besoins humains et en même temps protéger les ressources naturelles desquelles tout le monde dépend pour survivre. Madagascar est une des régions les plus biodiversifiées du monde : plus de 80% des espèces des flores et 90% des faunes qui se trouvent dans l’île sont endémiques à Madagascar. Partout à Madagascar, cependant, la balance fragile entre la capacité de l’environnement à fournir les humains à leurs besoins et durer pour la prochaine génération a commencé à …

Refinement And Validation Of A Multi-Level Assessment Method For Mid-Atlantic Tidal Wetlands (Epa #Cd-973494-01), David L. O'Brien, Amy Jacobs, Marcia Berman, Tamia Rudnicky, Erin Mclaughlin, Andrew Howard

Reports

The Shoreline Inventory for Delaware Coastal Bays has occurred in a series of Phases beginning in 2005. Phase was to develop a Tidal Wetlands Protocol which included data development for the Shoreline Inventory for the Indian River Watershed.

The data inventory developed for the Shoreline Inventory is based on a three-tiered shoreline assessment approach. In most cases this assessment characterizes conditions that can be observed from a small boat navigating along the shoreline. Hand-held GPS units and GPS registered videography were used to collect data on conditions observed in the field. The three-tiered shoreline assessment approach divides the shore zone …

Cuando Viene El Agua: Percepciones De Los Impactos Sociales Del Proyecto Hidroeléctrico “Chan-75” En Las Comunidades Ubicadas En La Cuenca Del Río Changuinola, Bocas Del Toro, Jeffery D. Stein

Independent Study Project (ISP) Collection

This report analyzes the anticipated social impacts of a hydroelectric project, titled “Chan-75,” in the surrounding communities. The project is located in the Bosque Protector de Palo Seco (BPPS) protected area along the Changuinola River. The flooding of 750 ha to create a reservoir for the dam will require the resettlement of roughly 1,000 residents of at least four indigenous Ngöbe Buglé communities including Valle del Rey, Charco la Pava, Changuinola Arriba, and Guayabal, in addition to the submersion of thousands of ha of farmland belonging to residents of nearby communities (Cordero et al). Once completed, the dam will generate …

The Role Of Industrial And Traditional Fishing In Sustainable Resource Management, Aime Schwartz

Independent Study Project (ISP) Collection

For decades, the notion of ‘sustainable development’ has been a source of international contention and debate. While the meanings and implications of sustainable development are widely disputed, it is interpreted by many as an ideal that encompasses social, environmental and economic spheres while promoting the value of human rights in development. Theoretically, this approach allows for the quality of life of current and future generations to be considered in environmental decision-making and formally recognized by national and international standards, dictated primarily by wealthy industrialized governments (Adebowale et al 138). Policy-makers in developing nations continuously face the struggle to balance the …

Fueling Samoa’S Growing Transport Sector: The Impact Of Rising Oil Prices And Imports On A Pacific Island Economy, Janis Mcdaid Ikeda

Independent Study Project (ISP) Collection

The developed nations of the world are more concerned than ever with reducing their dependence on imported oil, lowering greenhouse gas emissions and developing alternative energy technologies. These issues are among the highest priorities for developing economies in the Pacific region as well. Samoa is a part of several regional initiatives that address petroleum and energy issues and is due to launch its own national energy policy in the coming months.

Petroleum prices in Samoa are low in comparison to other parts of the region because of the unique government/oil company partnership that administers its oil imports and pricing; however …

Potentiality Of Biogas And The Role Of Substrates In Biogas Formation Potential, Scott Shealy

Independent Study Project (ISP) Collection

Biogas infrastructure development, particularly in countries such as Vietnam, has the potential to provide great benefits to people living agrarian lifestyles in rural areas. Decentralized wastewater treatment facilities that utilize anaerobic technologies to digest organic waste for the purpose of collecting methane provide a number of benefits to centralized use as well. In both cases, users benefit from the production of methane gas, wastewater treatment, nutrient recycling, and organic fertilizers. In the case of decentralized use, as is most prevalent in Vietnam, integrated farming methods, such as the VACB model, allow farmers to reap the benefits of a wide array …

Tertiary Education For Sustainability: Four Australian Universities’ Commitment To Sustainability, Meredith Wilensky

Independent Study Project (ISP) Collection

With increasing evidence of issues such as global climate change and environmental degradation, the need for sustainable development has become evident. While achieving sustainability will require many approaches, there is an immense body of literature, declarations and charters supporting education as key. Tertiary education is particularly important because universities are training our future leaders and professionals. For this reason, universities have a moral responsibility to prepare to work toward achieving a sustainable world. Unfortunately, integrating sustainability education is complex, requiring a paradigm shift toward collaboration, interdisciplinary education and an action-oriented approach.

This study analyzed the extent to and manner in …

Ecosystem-Based Fishery Management In South Australia And Victoria, Rebecca Devries

Independent Study Project (ISP) Collection

The detrimental impact from fishing on various species as well as on the overall ecosystem has increased so much over the years that the Australian fishing industry is currently in jeapordy. Scientists, fishery managers, government agencies, industry, and environmental organizations have therefore been actively developing and researching management strategies focused on finding a balance between fisheries and the ecosystem. A new holistic and promising approach, ecosystem-based fishery management, invested in ecological sustainability and the recognition of the critical interdependence between human well-being and ecological health, is currently proposed as the best solution for fishery management.

This paper will consequently investigate …

The Role Of The Intersection Space In The Photochemistry Of Tricyclo[3.3.0.0(2,6)]Octa-3,7-Diene, Luis Manuel Frutos, Unai Sancho, Marco Garavelli, Massimo Olivucci, Obis Castano

Chemistry Faculty Publications

CASSCF and CASPT2 methods were used to study the photochemistry of tricyclo[3.3.0.0(2,6)]octa-3,7-diene (TOD). The analysis of different S-1 reaction paths as well as the topology of the S-1/S-0 intersection space allows us to establish two novel properties associated with the photochemical behavior of this compound: (i) simple low-lying intersection space domains can mediate different photoproducts, and (ii) TOD photochemistry is probably mediated by two disconnected intersection space domains, related to the formation of cyclooctatetraene and semibulvalene in different time-scales. It is shown that these domains are chemically distinct since the first, leading to COT, mediates barrierless pericyclic reactions while the …

Everglades National Park – Surveying The Southernmost Cave In The Continental United States, Lee J. Florea, Amber J. Yuellig

Earth, Environmental, and Atmospheric Sciences Faculty Publications

Everglades National Park encompasses 1.5 million acres of grassland glades, tree islands, cypress strands, and mangrove marshes and is world renowned for natural vistas and wonders at the surface. The cave and karst resources in this park, however, are little known even though much of the park is underlain by limestone. In a recent communication to the authors, Alan Cressler (U.S. Geological Survey, written communication, 2006) described his visit to Palma Vista Cave in Everglades National Park last November that he originally explored and described over 13 years ago (Cressler, 1993).

South River Shoreline Management Plan Synopsis, C. Scott Hardaway Jr.

Reports

This Shoreline Management Plan (Plan) has been developed with funding from the Keith Campbell Foundation and the Chesapeake Bay Foundation in response to the Anne Arundel County’s desire to create a comprehensive shoreline management plan for the South River coast (Figure 1).

The study area includes shorelines along the South River from Chesapeake Bay west and north to just above the Route 2 Bridge. The total shoreline assessed for the study is about 82 miles. This study makes recommendations that address shoreline erosion on an as-needed basis. The impacts of “doing nothing” to the shoreline are assessed as are various …